BARRETT, Graham; WOUDHUYSEN, George. Assembling the Austrasian Letters at Trier and Lorsch: Assembling the Austrasian Letters. Early Medieval Europe. Roč. 24, čís. 1, s. 3–57. Dostupné online [cit. 2022-05-25]. DOI10.1111. (anglicky)
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MARTINDALE, J. R. The Prosopography of the Later Roman Empire 2 Part Set: Volume 3, AD 527-641. [s.l.]: Cambridge University Press, 1992. 1626 s. Dostupné online. ISBN978-0-521-20160-5. S. 297. (anglicky)
BARRETT, Graham; WOUDHUYSEN, George. Assembling the Austrasian Letters at Trier and Lorsch: Assembling the Austrasian Letters. Early Medieval Europe. Roč. 24, čís. 1, s. 3–57. Dostupné online [cit. 2022-05-25]. DOI10.1111. (anglicky)